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T. CHRISTIAN, OF NEW YORK, N. Y.

OPERATING WINDOW-BLINDS.

To all whom t may concern:

Be it known that I, THnoDonn CHRISTIAN, of the city, county, and State of New York, have invented a new and Improved Apparatus for Turning the Slats of Venetian Vindow-Blinds; and I do by the following description declare and ascertain my said invention, referring to the accompanying drawings in illustration thereof, in which- .Figure l, is an elevation of the blind with the strip c removed so as to show the appai'latus for turning the slats; Figs. 2, 8, 4 and 5, detached parts; Fig. 6, section of blind with slats open; Fig. 7, section of blind with slats closed; Fig. 8, illustrative diagram.

I am aware that many devices of arms or cranks projecting from the axis of motion of blind slats and actuated by rods or chains have been essayed, but when the slats in these cases are closed either up or down the wrist or point of contact is so near the line of the axes of t-he slats as to make it very difiicult to move them. This is illustrated in Fig. 8, where ai, show the connecting wrists; y, fy, the axes7 nearly in line therewith. Now if the connecting rod were to be pushed straight up the slats could not be turned and it becomes necessary to draw the rod outward and parallel to effect the revolving of the slats into the posit-ion e. At 'w same figure this is illustrated, when the connections are nearer the center, the action however' being the same.

By my mode of construction I obviate the diiiiculties above named, and form a more compact and ecient device as follows: The slats are made in the ordinary way, but the tenon which forms the aXis of the slat passes into the stile through a hole considerably larger than is the tenon. This allows the bind to be often painted without sticking or clogging the slats and preventing their turning. There is a groove or deep channel in one stile seen at c Fig. l, into which the tenons above named enter through theJ large opening. Within the channel the tenons all bear small pulleys d of metal and they have a metal gudgeon e (shown separately at Fig. 5) driven into their ends and projecting suiciently beyond the pulley Z to enter a metal bearing g (see Figs. 2 and 5) by which the slat is supported in beyond the reach of paint and the action of damp or to prevent its turning. I thus insure freedom of action for the slats against all usual contingencies. I couple the slats together in pairs by a thin metallic band lf2 around the two pulleys as clearly shown in Figs. l, and 6, and 7, so that by moving this `band both slats turn alike and at every position they may chance to be in the leverage on the pulleys being equal they move with equal ease. I fit a rod 7L into the channel above named in the stile and this rod has Vhen in place a small thumb piece t attached to the rod it projects through one of the said slots7 the lat-ter being covered with an escutcheon Z to make the linish. The rods of the several panels may be connected by a set screw 0 working through a separate slot like'the thumb pieces. This is seen at m. The devices thus arranged are together a perfect apparatus for the turning of window blind slats. They can be held firmly in any position by screwing down the thumb pieces upon the escutcheon so as to bind.

Having thus fully described my invention what I claim therein is-- l. The coupling the slats together as herein described and connecting a whole panel by means of a rod in the manner and for the purpose set forth moving the rod in a straight line.

2. I also claim taking the bearing of the tenons upon the stile on the inside of the channel therein and beyond the pulley as and for the purpose specied.

THEODORE CHRISTIAN.

Witnesses:

WM. THOMPSON, A. M. Nook. 

